docs(genai): Add Gemini Safety Sample (#13156)

* docs(genai): Add Gemini Safety Sample

* Update safety sample to use latest SDK version and typing for SafetySetting/HttpOptions

Author: holtskinner

genai/safety/noxfile_config.py

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+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Default TEST_CONFIG_OVERRIDE for python repos.
+
+# You can copy this file into your directory, then it will be imported from
+# the noxfile.py.
+
+# The source of truth:
+# https://github.com/GoogleCloudPlatform/python-docs-samples/blob/main/noxfile_config.py
+
+TEST_CONFIG_OVERRIDE = {
+    # You can opt out from the test for specific Python versions.
+    "ignored_versions": ["2.7", "3.7", "3.8", "3.10", "3.11", "3.12"],
+    # Old samples are opted out of enforcing Python type hints
+    # All new samples should feature them
+    "enforce_type_hints": True,
+    # An envvar key for determining the project id to use. Change it
+    # to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a
+    # build specific Cloud project. You can also use your own string
+    # to use your own Cloud project.
+    "gcloud_project_env": "GOOGLE_CLOUD_PROJECT",
+    # 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',
+    # If you need to use a specific version of pip,
+    # change pip_version_override to the string representation
+    # of the version number, for example, "20.2.4"
+    "pip_version_override": None,
+    # A dictionary you want to inject into your test. Don't put any
+    # secrets here. These values will override predefined values.
+    "envs": {},
+}

genai/safety/requirements-test.txt

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+google-api-core==2.24.0
+pytest==8.2.0

genai/safety/requirements.txt

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+google-genai==1.2.0

genai/safety/safety_with_txt.py

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from google.genai.types import GenerateContentResponse
+
+
+def generate_content() -> GenerateContentResponse:
+    # [START googlegenaisdk_safety_with_txt]
+    from google import genai
+    from google.genai.types import (
+        GenerateContentConfig,
+        HarmCategory,
+        HarmBlockThreshold,
+        HttpOptions,
+        SafetySetting,
+    )
+
+    client = genai.Client(http_options=HttpOptions(api_version="v1"))
+
+    system_instruction = "Be as mean as possible."
+
+    prompt = """
+        Write a list of 5 disrespectful things that I might say to the universe after stubbing my toe in the dark.
+    """
+
+    safety_settings = [
+        SafetySetting(
+            category=HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT,
+            threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
+        ),
+        SafetySetting(
+            category=HarmCategory.HARM_CATEGORY_HARASSMENT,
+            threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
+        ),
+        SafetySetting(
+            category=HarmCategory.HARM_CATEGORY_HATE_SPEECH,
+            threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
+        ),
+        SafetySetting(
+            category=HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT,
+            threshold=HarmBlockThreshold.BLOCK_LOW_AND_ABOVE,
+        ),
+    ]
+
+    response = client.models.generate_content(
+        model="gemini-2.0-flash-001",
+        contents=prompt,
+        config=GenerateContentConfig(
+            system_instruction=system_instruction,
+            safety_settings=safety_settings,
+        ),
+    )
+
+    # Response will be `None` if it is blocked.
+    print(response.text)
+    # Finish Reason will be `SAFETY` if it is blocked.
+    print(response.candidates[0].finish_reason)
+    # Safety Ratings show the levels for each filter.
+    for safety_rating in response.candidates[0].safety_ratings:
+        print(safety_rating)
+
+    # Example response:
+    # None
+    # FinishReason.SAFETY
+    # blocked=None category=<HarmCategory.HARM_CATEGORY_HATE_SPEECH: 'HARM_CATEGORY_HATE_SPEECH'> probability=<HarmProbability.NEGLIGIBLE: 'NEGLIGIBLE'> probability_score=1.767152e-05 severity=<HarmSeverity.HARM_SEVERITY_NEGLIGIBLE: 'HARM_SEVERITY_NEGLIGIBLE'> severity_score=None
+    # blocked=None category=<HarmCategory.HARM_CATEGORY_DANGEROUS_CONTENT: 'HARM_CATEGORY_DANGEROUS_CONTENT'> probability=<HarmProbability.NEGLIGIBLE: 'NEGLIGIBLE'> probability_score=2.399503e-06 severity=<HarmSeverity.HARM_SEVERITY_NEGLIGIBLE: 'HARM_SEVERITY_NEGLIGIBLE'> severity_score=0.061250776
+    # blocked=True category=<HarmCategory.HARM_CATEGORY_HARASSMENT: 'HARM_CATEGORY_HARASSMENT'> probability=<HarmProbability.MEDIUM: 'MEDIUM'> probability_score=0.64129734 severity=<HarmSeverity.HARM_SEVERITY_MEDIUM: 'HARM_SEVERITY_MEDIUM'> severity_score=0.2686556
+    # blocked=None category=<HarmCategory.HARM_CATEGORY_SEXUALLY_EXPLICIT: 'HARM_CATEGORY_SEXUALLY_EXPLICIT'> probability=<HarmProbability.NEGLIGIBLE: 'NEGLIGIBLE'> probability_score=5.2786977e-06 severity=<HarmSeverity.HARM_SEVERITY_NEGLIGIBLE: 'HARM_SEVERITY_NEGLIGIBLE'> severity_score=0.043162167
+
+    # [END googlegenaisdk_safety_with_txt]
+    return response
+
+
+if __name__ == "__main__":
+    generate_content()

genai/safety/test_safety_samples.py

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+import safety_with_txt
+
+
+os.environ["GOOGLE_GENAI_USE_VERTEXAI"] = "True"
+os.environ["GOOGLE_CLOUD_LOCATION"] = "us-central1"
+# The project name is included in the CICD pipeline
+# os.environ['GOOGLE_CLOUD_PROJECT'] = "add-your-project-name"
+
+
+def test_safety_with_txt() -> None:
+    response = safety_with_txt.generate_content()
+    assert response